Pentium 4 HT 661 vs Phenom II X4 945 (125W)
Primary details
Comparing Phenom II X4 945 (125W) and Pentium 4 HT 661 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Deneb (2009−2011) | Cedar Mill (2006) |
| Release date | 23 April 2009 (15 years ago) | 5 January 2006 (18 years ago) |
| Launch price (MSRP) | no data | $401 |
Detailed specifications
Phenom II X4 945 (125W) and Pentium 4 HT 661 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 1 (Single-Core) |
| Threads | 4 | 2 |
| Base clock speed | 3 GHz | 3.6 GHz |
| Boost clock speed | 3 GHz | 3.6 GHz |
| L1 cache | 128 KB (per core) | 28 KB |
| L2 cache | 512 KB (per core) | 2 MB |
| L3 cache | 6 MB (shared) | 0 KB |
| Chip lithography | 45 nm | 65 nm |
| Die size | 258 mm2 | 81 mm2 |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | 758 million | 188 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X4 945 (125W) and Pentium 4 HT 661 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | AM3 | 775 |
| Power consumption (TDP) | 125 Watt | 86 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 945 (125W) and Pentium 4 HT 661. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 945 (125W) and Pentium 4 HT 661 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 945 (125W) and Pentium 4 HT 661. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR1, DDR2, DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 945 (125W) and Pentium 4 HT 661.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Recency | 23 April 2009 | 5 January 2006 |
| Physical cores | 4 | 1 |
| Threads | 4 | 2 |
| Chip lithography | 45 nm | 65 nm |
| Power consumption (TDP) | 125 Watt | 86 Watt |
Phenom II X4 945 (125W) has an age advantage of 3 years, 300% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.
Pentium 4 HT 661, on the other hand, has 45.3% lower power consumption.
We couldn't decide between Phenom II X4 945 (125W) and Pentium 4 HT 661. We've got no test results to judge.
Should you still have questions on choice between Phenom II X4 945 (125W) and Pentium 4 HT 661, ask them in Comments section, and we shall answer.
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